Subtitles are divided into Unicode and ASCII code.
When subtitles in Japanese, Chinese, German, Arabic, etc. made of ASCII code rather than Unicode are played as is, it is played with all being broken.
That’s why normal subtitles are outputted only when code page setup is changed to the relevant language for such files.
Please change Execute GOM Video Converter->Config -> Subtitle -> Code Page -> Select code page values.
<Condition when Japanese subtitles are added without change of the code page>
<Condition when Japanese subtitles are added after change of the code page>